RTFM wrote:It means that 50% of people scored less than a 168 and 25% of people scored above a 168. Which also means that at least 25% of people scored a 168.

Not quite. The cutoff for 168 doesn't necessarily have to be exactly at the median mark - it only means that at least 50% scored 168 or above. They could potentially have had up to 75% (minus one person, of course) of the class score a 168 - not necessary that anyone scored above a 168 (though of course some did). At least 25% of the class scored a 166 or below, but no more than 50% (minus one person). Seems likely that around 10-20% of the class scored above a 168, 40-60% scored exactly a 168, and about 30-40% of the class scored below a 168.

RTFM wrote:It means that 50% of people scored less than a 168 and 25% of people scored above a 168. Which also means that at least 25% of people scored a 168.

Not quite. The cutoff for 168 doesn't necessarily have to be exactly at the median mark - it only means that at least 50% scored 168 or above. They could potentially have had up to 75% (minus one person, of course) of the class score a 168 - not necessary that anyone scored above a 168 (though of course some did). At least 25% of the class scored a 166 or below, but no more than 50% (minus one person). Seems likely that around 10-20% of the class scored above a 168, 40-60% scored exactly a 168, and about 30-40% of the class scored below a 168.

RTFM wrote:It means that 50% of people scored less than a 168 and 25% of people scored above a 168. Which also means that at least 25% of people scored a 168.

Not quite. The cutoff for 168 doesn't necessarily have to be exactly at the median mark - it only means that at least 50% scored 168 or above. They could potentially have had up to 75% (minus one person, of course) of the class score a 168 - not necessary that anyone scored above a 168 (though of course some did). At least 25% of the class scored a 166 or below, but no more than 50% (minus one person). Seems likely that around 10-20% of the class scored above a 168, 40-60% scored exactly a 168, and about 30-40% of the class scored below a 168.